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  • Question
  • Dry rot


  • Options
  • A. cracks the timber
  • B. reduces the strength of timber
  • C. reduces the timber to powder
  • D. shrinks the timber
  • E. spoils the appearance of timber.

  • Correct Answer
  • reduces the timber to powder 


  • Building Materials problems


    Search Results


    • 1. Pick up correct statement from the following:

    • Options
    • A. Fibre boards are used for thermal and acoustic control
    • B. Fibre boards are used for light weight standing members
    • C. Fibre boards are obtained by impregnating a resin product on fibres
    • D. all the above.
    • Discuss
    • 2. Pick up the correct statement from the following:

    • Options
    • A. Solder material is an alloy which melts at a temperature above 400°C
    • B. Brazing is done at temperature above 600°C to 1100°C
    • C. Brazing joint is stronger than the solder joint
    • D. all the above.
    • Discuss
    • 3. Pick up the correct statement from the following:

    • Options
    • A. The phenol is carbolic acid
    • B. The phenol is either extracted from coal-tar or prepared from benzene
    • C. Phenol reacts with formaldehyde, to form phenol formaldehyde resin
    • D. The plastics prepared from phenol-formaldehyde are used for paints, varnishes, w.c. seats
    • E. All the above.
    • Discuss
    • 4. Smith's test of stones is performed to find out

    • Options
    • A. the presence of soluble matter of stone
    • B. the compressive strength of the stone
    • C. the hardness of the stone
    • D. the toughness of the stone.
    • Discuss
    • 5. Bessemer process is used for the manufacture of

    • Options
    • A. Pig iron
    • B. cast iron
    • C. Wrought iron
    • D. Steel.
    • Discuss
    • 6. Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as

    • Options
    • A. quick setting cement
    • B. rapid hardening cement
    • C. white cement
    • D. low heat Portland cement.
    • Discuss
    • 7. German silver is an alloy of

    • Options
    • A. zinc, lead and nickel
    • B. silver, gold and lead
    • C. copper, nickel and zinc
    • D. copper, brass and zinc
    • E. brass, silver and zinc.
    • Discuss
    • 8. The silica is used for preparing

    • Options
    • A. silica bricks
    • B. coke oven
    • C. lining for glass furnaces
    • D. all of these.
    • Discuss
    • 9. The normal curing period for lime mortar, is:

    • Options
    • A. one day
    • B. 3 days
    • C. 7 days
    • D. 10 days
    • E. 14 days.
    • Discuss
    • 10. Pick up the correct statement from the following:

    • Options
    • A. Quick lime is obtained by burning pure lime stone:
    • B. Hydraulic lime is obtained by burning lime stone containing clay 5% to 30%
    • C. Poor lime is obtained by burning lime stone containing impurities more than 5%
    • D. All the above.
    • Discuss


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